--- a/libpurple/protocols/msn/notification.c Wed Dec 09 21:09:14 2009 +0000 +++ b/libpurple/protocols/msn/notification.c Wed Dec 09 21:10:08 2009 +0000 @@ -1324,7 +1324,7 @@ } clientid = strtoul(cmd->params[4], &extcap_str, 10); - if (extcap_str && *extcap_str) + if (session->protocol_ver >= 16 && extcap_str && *extcap_str) extcaps = strtoul(extcap_str+1, NULL, 10); else extcaps = 0;